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Stafford IA, Garite TJ, Maurel K, Combs CA, Heyborne K, Porreco R, Nageotte M, Baker S, Gopalani S, Dola C, How H, Das AF. Cervical Pessary versus Expectant Management for the Prevention of Delivery Prior to 36 Weeks in Women with Placenta Previa: A Randomized Controlled Trial. AJP Rep 2019; 9:e160-e166. [PMID: 31044098 PMCID: PMC6491366 DOI: 10.1055/s-0039-1687871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 02/21/2019] [Indexed: 02/06/2023] Open
Abstract
Objective This multicenter randomized controlled trial compared cervical pessary (CP) versus expectant management (EM) in women with placenta previa between 22.0 and 32.0 in prolonging gestation until ≥ 36.0 weeks' gestation. Study Design This study took place from November 2016 to June 2018. Women were randomized to receive either the Bioteque CP or EM. The pessary was removed at ≥ 36.0 weeks unless indicated. The primary outcome was gestational age (GA) at delivery, with secondary outcomes including need for transfusion, number and duration of antepartum admissions, type of delivery, and neonatal outcomes. A total of 140 patients were needed to show a 3-week prolongation of pregnancy in the pessary group; however, the trial was stopped early due to budgetary issues. Results Of the 33 eligible women, 17 were enrolled. Although not statistically significant, the mean GA at delivery in the CP group was greater than women in the EM group (36.5 ± 1.23 vs. 36.0 ± 2.0; p = 0.1673). The number and duration of antepartum admissions was greater in the EM group (2.7 ± 0.58 vs. 16.0 ± 22.76 days; p = 0.1264) as well. Conclusion Although the study was underpowered to determine the primary outcome, safety and feasibility of CP in pregnancies complicated with previa were demonstrated.
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Affiliation(s)
- Irene A Stafford
- Department of Obstetrics and Gynecology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas.,Touro Infirmary, Louisiana State University Health Science Center, New Orleans, Louisiana
| | - Thomas J Garite
- University of California, Irvine, Orange, California.,The Center for Research, Education, Quality and Safety, Mednax, Inc., Sunrise, Florida
| | - Kimberly Maurel
- The Center for Research, Education, Quality and Safety, Mednax, Inc., Sunrise, Florida
| | - C Andrew Combs
- The Center for Research, Education, Quality and Safety, Mednax, Inc., Sunrise, Florida.,Obstetrix Medical Group, San Jose, California
| | - Kent Heyborne
- Denver Health and Hospital Authority, Denver, Colorado
| | | | | | - Susan Baker
- University of South Alabama Children's and Women's Hospital, Mobile, Alabama
| | | | - Chi Dola
- Tulane Lakeside Hospital for Women and Children, New Orleans, Louisiana
| | - Helen How
- Norton Hospital, Louisville, Kentucky
| | - Anita F Das
- Das Consulting Group, San Francisco, California
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Abstract
SummaryThe von Willebrand factor (vWF) has gained considerable interest in recent years as a marker of endothelial cell activation or insult and by virtue of its interactions with platelets and vessel walls. Altered patterns of vWF multimers were found to occur frequently in patients with thrombotic thrombocytopenic purpura in the acute and chronic stages. This disorder shares some clinical and laboratory findings with pre-eclampsia, including thrombocytopenia. Recent studies have also suggested that abnormalities of endothelial cell metabolism play a central role in the pathophysiology of pre-eclampsia. In order to determine if vWF could be instrumental in the disease process and the thrombocytopenia of pre-eclampsia we analyzed the ante- and postpartum structural and functional distribution of vWF. This data was correlated with hematological parameters such as platelet counts and the clinical severity of the disease. We found no consistent changes of vWF in association with thrombocytopenia or clinical severity. However, functional vWF was lower in postpartum samples of severely affected pre-eclamptics as compared to normal controls. This finding may reflect endothelial cell exhaustion after stimulation or cellular injury. Elevated titers of fibrin split products and thrombocytopenia were evident in severe pre-eclampsia, as seen in DIC, despite factor VIII coagulant levels within the normal range. Our data is consistent with the hypothesis of endothelial cell dysfunction in pre-eclampsia. However, the mechanism of thrombocytopenia in this disorder does not appear to be related to alterations in the structure or biological function of vWF.
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Affiliation(s)
- Frauke Bergmann
- The Department of Obstetrics and Gynecology, Michael Reese Hospital and the University of Illinois at Chicago, and from the Department of Medicine, Joint Section of Hematology/Oncology, Michael Reese Hospital and the University of Chicago, Chicago, Illinois, USA
| | - Siegfried Rotmensch
- The Department of Obstetrics and Gynecology, Michael Reese Hospital and the University of Illinois at Chicago, and from the Department of Medicine, Joint Section of Hematology/Oncology, Michael Reese Hospital and the University of Chicago, Chicago, Illinois, USA
| | - Bruce Rosenzweig
- The Department of Obstetrics and Gynecology, Michael Reese Hospital and the University of Illinois at Chicago, and from the Department of Medicine, Joint Section of Hematology/Oncology, Michael Reese Hospital and the University of Chicago, Chicago, Illinois, USA
| | - Helen How
- The Department of Obstetrics and Gynecology, Michael Reese Hospital and the University of Illinois at Chicago, and from the Department of Medicine, Joint Section of Hematology/Oncology, Michael Reese Hospital and the University of Chicago, Chicago, Illinois, USA
| | - Juan Chediak
- The Department of Obstetrics and Gynecology, Michael Reese Hospital and the University of Illinois at Chicago, and from the Department of Medicine, Joint Section of Hematology/Oncology, Michael Reese Hospital and the University of Chicago, Chicago, Illinois, USA
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Combs CA, Garite TJ, Maurel K, Abril D, Das A, Clewell W, Heyborne K, How H, Huang W, Lewis D, Lu G, Miller H, Nageotte M, Porreco R, Sheikh A, Tran L. 17-hydroxyprogesterone caproate for preterm rupture of the membranes: a multicenter, randomized, double-blind, placebo-controlled trial. Am J Obstet Gynecol 2015; 213:364.e1-12. [PMID: 25979614 DOI: 10.1016/j.ajog.2015.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 05/05/2015] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Preterm rupture of membranes (PROM) is associated with an increased risk of preterm birth and neonatal morbidity. Prophylactic 17-hydroxyprogesterone caproate (17OHP-C) reduces the risk of preterm birth in some women who are at risk for preterm birth. We sought to test whether 17OHP-C would prolong pregnancy or improve perinatal outcome when given to mothers with preterm rupture of the membranes. STUDY DESIGN This is a multicenter, double-blind, placebo-controlled, randomized clinical trial. The study included singleton pregnancies with gestational ages from 23(0/7) to 30(6/7) weeks at enrollment, documented PROM, and no contraindication to expectant management. Consenting women were assigned randomly to receive weekly intramuscular injections of 17OHP-C (250 mg) or placebo. The primary outcome was continuation of pregnancy until a favorable gestational age, which was defined as either 34(0/7) weeks of gestation or documentation of fetal lung maturity at 32(0/7) to 33(6/7) weeks of gestation. The 2 prespecified secondary outcomes were interval from randomization to delivery and composite adverse perinatal outcome. The planned sample size was 222 total women. RESULTS From October 2011 to April 2014, 152 women were enrolled; 74 women were allocated randomly to 17OHP-C, and 78 were allocated randomly to placebo. The trial was stopped when results of a planned interim analysis suggested that continuation was futile. The primary outcome was achieved in 3% of the 17OHP-C group and 8% of the placebo group (P = .18). There was no significant between-group difference in the prespecified secondary outcomes, randomization-to-delivery interval (17.1 ± 16.1 vs 17.0 ± 15.8 days, respectively; P = .76) or composite adverse perinatal outcome (63% vs 61%, respectively; P = .93). No significant differences were found in other outcomes, which included rates of chorioamnionitis, postpartum endometritis, cesarean delivery, individual components of the composite outcome, or prolonged neonatal length of stay. CONCLUSION Compared with placebo, weekly 17OHP-C injections did not prolong pregnancy or reduce perinatal morbidity in patients with PROM in this trial.
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Affiliation(s)
- C Andrew Combs
- Center for Research, Education, and Quality, Obstetrix, Mednax National Medical Group, Sunrise, FL; Obstetrix Medical Group, San Jose, CA.
| | - Thomas J Garite
- Center for Research, Education, and Quality, Obstetrix, Mednax National Medical Group, Sunrise, FL; Department of Obstetrics and Gynecology, University of California, Irvine, School of Medicine, Irvine, CA
| | - Kimberly Maurel
- Center for Research, Education, and Quality, Obstetrix, Mednax National Medical Group, Sunrise, FL
| | - Diana Abril
- Center for Research, Education, and Quality, Obstetrix, Mednax National Medical Group, Sunrise, FL
| | | | - William Clewell
- Obstetrix Medical Group, Phoenix Perinatal Associates, Phoenix, AZ
| | | | | | | | - David Lewis
- Department of Obstetrics and Gynecology, University of South Alabama School of Medicine, Mobile, AL
| | - George Lu
- Obstetrix Medical Group, Kansas City, MO
| | | | | | | | | | - Lan Tran
- Obstetrix Medical Group, Seattle, WA
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Galyean A, Garite TJ, Maurel K, Abril D, Adair CD, Browne P, Combs CA, How H, Iriye BK, Kominiarek M, Lu G, Luthy D, Miller H, Nageotte M, Ozcan T, Porto M, Ramirez M, Sawai S, Sorokin Y. Removal versus retention of cerclage in preterm premature rupture of membranes: a randomized controlled trial. Am J Obstet Gynecol 2014; 211:399.e1-7. [PMID: 24726507 DOI: 10.1016/j.ajog.2014.04.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 03/18/2014] [Accepted: 04/07/2014] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The decision of whether to retain or remove a previously placed cervical cerclage in women who subsequently rupture fetal membranes in a premature gestation is controversial and all studies to date are retrospective. We performed a multicenter randomized controlled trial of removal vs retention of cerclage in these patients to determine whether leaving the cerclage in place prolonged gestation and/or increased the risk of maternal or fetal infection. STUDY DESIGN A prospective randomized multicenter trial of 27 hospitals was performed. Patients included were those with cerclage placement at ≤23 weeks 6 days in singleton or twin pregnancies, with subsequent spontaneous rupture of membranes between 22 weeks 0 days and 32 weeks 6 days. Patients were randomized to retention or removal of cerclage. Patients were then expectantly managed and delivered only for evidence of labor, chorioamnionitis, fetal distress, or other medical or obstetrical indications. Management after 34 weeks was at the clinician's discretion. RESULTS The initial sample size calculation determined that a total of 142 patients should be included but after a second interim analysis, futility calculations determined that the conditional power for showing statistical significance after randomizing 142 patients for the primary outcome of prolonging pregnancy was 22.8%. Thus the study was terminated after a total of 56 subjects were randomized with complete data available for analysis, 32 to removal and 24 to retention of cerclage. There was no statistical significance in primary outcome of prolonging pregnancy by 1 week comparing the 2 groups (removal 18/32, 56.3%; retention 11/24, 45.8%) P = .59; or chorioamnionitis (removal 8/32, 25.0%; retention 10/24, 41.7%) P = .25, respectively. There was no statistical difference in composite neonatal outcomes (removal 16/33, 50%; retention 17/30, 56%), fetal/neonatal death (removal 4/33, 12%; retention 5/30, 16%); or gestational age at delivery (removal mean 200 days; retention mean 198 days). CONCLUSION Statistically significant differences were not seen in prolongation of latency, infection, or composite neonatal outcomes. However, there was a numerical trend in the direction of less infectious morbidity, with immediate removal of cerclage. These findings may not have met statistical significance if the original sample size of 142 was obtained, however they provide valuable data suggesting that there may be no advantage to retaining a cerclage after preterm premature rupture of membranes and a possibility of increased infection with cerclage retention.
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Affiliation(s)
- Anna Galyean
- Long Beach Memorial Medical Center, Long Beach, and Kaiser Permanente, Anaheim, CA
| | - Thomas J Garite
- University of California Irvine, Orange, CA; Obstetrix/Pediatrix Medical Group, Sunrise, FL
| | | | - Diana Abril
- Obstetrix/Pediatrix Medical Group, Sunrise, FL
| | - Charles D Adair
- Regional Obstetrical Consultants and University of Tennessee, Chattanooga, TN
| | - Paul Browne
- Obstetrix Medical Group of Georgia, Decatur, GA
| | | | - Helen How
- University of Cincinnati, Cincinnati, OH, and Norton Healthcare, Kosair Maternal-Fetal Medicine, Louisville, KY
| | | | | | - George Lu
- Obstetrix Medical Group, Kansas City, MO
| | | | | | - Michael Nageotte
- Long Beach Memorial Medical Center, Long Beach, and Kaiser Permanente, Anaheim, CA
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Sibai B, How H, Deka R, Niu W. 461: Common tagSNPs on progesterone receptor (PGR) gene are marginally associated with pre-term delivery in women receiving 17 alpha-hydroxyprogesterone caproate (17-P) treatment. Am J Obstet Gynecol 2012. [DOI: 10.1016/j.ajog.2011.10.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Wolfe K, Dearmond C, How H, Henderson ZT, Sibai B. The rates of abnormal glucose challenge tests and gestational diabetes in women receiving 17α-hydroxyprogesterone caproate. Am J Perinatol 2011; 28:741-6. [PMID: 21660898 DOI: 10.1055/s-0031-1280854] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We compared the rates of abnormal 1-hour glucose challenge tests (GCT) and gestational diabetes (GDM) between women receiving 17α-hydroxyprogesterone caproate (17-P) and women who did not receive 17-P to determine if the effect varies based on the number of doses received or in a group of high-risk obese women. We performed a secondary analysis of a prospective cohort study where women with a history of a previous preterm delivery in the antecedent pregnancy followed at a high-risk clinic were offered 17-P. GCT was performed after the initiation of 17-P, and doses given prior to testing were recorded. Rates of abnormal GCT and GDM were compared between those receiving 17-P ( N = 67) and controls ( N = 140). Mean glucose values (112.4 versus 111.3, P = 0.8), rate of abnormal GCT (23.9% versus 20%, adjusted odds ratio 1.45, 95% confidence interval 0.7 to 3.0), and rate of GDM (6% versus 8.6%, adjusted odds ratio 1.21, 95% confidence interval 0.3 to 4.5) were similar between groups. In this prospective study, 17-P administration to women at risk of recurrent preterm delivery did not significantly affect glucose tolerance.
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Affiliation(s)
- Katherine Wolfe
- Division of Maternal-Fetal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, 45267-0526, USA
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Wolfe K, Dearmond C, How H, Sibai B. 245: The rates of abnormal glucose challenge tests and gestational diabetes are not increased in women receiving 17-hydroxyprogesterone caproatefor the prevention of preterm delivery: a case-control study. Am J Obstet Gynecol 2009. [DOI: 10.1016/j.ajog.2009.10.260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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O'Brien JM, Defranco EA, Adair CD, Lewis DF, Hall DR, How H, Bsharat M, Creasy GW. Effect of progesterone on cervical shortening in women at risk for preterm birth: secondary analysis from a multinational, randomized, double-blind, placebo-controlled trial. Ultrasound Obstet Gynecol 2009; 34:653-659. [PMID: 19918965 DOI: 10.1002/uog.7338] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVES To determine whether progesterone supplementation alters cervical shortening in women at increased risk for preterm birth. METHODS We performed a planned secondary analysis from a large, multinational preterm birth prevention trial of daily intravaginal progesterone gel, 90 mg, compared with placebo in women with a history of spontaneous preterm birth or premature cervical shortening. Transvaginal cervical length measurements were obtained in all randomized patients at baseline (18 + 0 to 22 + 6 weeks' gestation) and at 28 weeks' gestation. For this secondary analysis, the difference in cervical length between these time points was compared for the study population with a history of spontaneous preterm birth and for a population with premature cervical shortening (< or = 30 mm) at randomization. Differences between groups in cervical length for the 28-week examination were analyzed using ANCOVA, including adjustment for relevant clinical parameters and maternal characteristics. RESULTS Data were analyzed from 547 randomized patients with a history of preterm birth. The progesterone-treated patients had significantly less cervical shortening than the placebo group (difference 1.6 (95% CI, 0.3-3.0) mm; P = 0.02, ANCOVA). In the population of 104 subjects with premature cervical shortening at randomization, the cervical length also differed significantly on multivariable analysis, with the treatment group preserving more cervical length than the placebo group (difference 3.3 (95% CI, 0.3-6.2) mm; P = 0.03, ANCOVA), with adjustment for differences in cervical length at screening. A significant difference was also observed between groups for categorical outcomes including the frequency of cervical length progression to < or = 25 mm and a > or = 50% reduction in cervical length from baseline in this subpopulation. CONCLUSIONS Intravaginal progesterone enhances preservation of cervical length in women at high risk for preterm birth.
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Affiliation(s)
- J M O'Brien
- Perinatal Diagnostic Center, Central Baptist Hospital, Lexington, KY 40503, USA.
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Bombrys AE, Barton JR, Nowacki EA, Habli M, Pinder L, How H, Sibai BM. Expectant management of severe preeclampsia at less than 27 weeks' gestation: maternal and perinatal outcomes according to gestational age by weeks at onset of expectant management. Am J Obstet Gynecol 2008; 199:247.e1-6. [PMID: 18771971 DOI: 10.1016/j.ajog.2008.06.086] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2008] [Revised: 05/07/2008] [Accepted: 06/25/2008] [Indexed: 10/21/2022]
Abstract
OBJECTIVE The objective of the study was to determine perinatal outcome and maternal morbidities based on gestational age (GA) at the onset of expectant management in severe preeclampsia at less than 27 weeks. STUDY DESIGN This was a retrospective analysis of outcome in patients with severe preeclampsia. Forty-six patients (51 fetuses) with severe preeclampsia at less than 27 weeks were studied. Corticosteroids were administered beyond 23 weeks. Perinatal and maternal complications (a composite maternal morbidities including HELLP (hemolysis, elevated liver enzymes, and low platelet count) syndrome, pulmonary edema, eclampsia, and renal insufficiency were analyzed. RESULTS Four patients had multifetal gestations (1 triplet, 3 twins). Median days of prolongation was 6 (range 2-46). Overall perinatal survival was 29 of 51 (57%). Birthweights of 27 (53%) were less than 10%, and 18 (35%) were less than 5%. There were no perinatal survivors in those with a GA less than 23 weeks, at 23 to 23 6/7 weeks, 2 of 10 (20%) survived, and both reached 26 weeks at delivery. For those at 24 to 24 6/7, 25 to 25 6/7, and 26 to 26 6/7 weeks, the perinatal survival rates were 5 of 7 (71%), 13 of 17 (76%), and 9 of 10 (90%), respectively; but rates of respiratory complications were high. There were no maternal deaths, but overall maternal morbidity was 21 of 46 (46%), but was 9 of 14 (64%) in those at less than 24 weeks. CONCLUSION Perinatal outcome in severe preeclampsia in the midtrimester is dependent on GA at onset of expectant management and GA at delivery. Given the high maternal morbidity and extremely low perinatal survival in expectant management at less than 24 weeks, termination of pregnancies should be offered after extensive counseling.
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Bombrys AE, Neiger R, Hawkins S, Sonek J, Croom C, McKenna D, Ventolini G, Habli M, How H, Sibai B. Pregnancy outcome in isolated single umbilical artery. Am J Perinatol 2008; 25:239-42. [PMID: 18548398 DOI: 10.1055/s-2008-1061504] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Our objective was to determine whether the rate of small for gestational age (SGA) infants and adverse perinatal outcome are increased in pregnancies diagnosed with an isolated single umbilical artery (SUA). We compared 297 pregnancies with a SUA diagnosed on routine obstetrical ultrasound with 297 pregnancies with a three-vessel cord control. Pregnancies complicated by major fetal anomalies were excluded. The rate of SGA, fetal death, and neonatal outcomes were compared between the two groups. Data analysis were performed using the T-test and chi-square test. The sample size had 80% power to detect a 50% difference between groups assuming a SGA rate of 20% in the SUA group and 10% in the control, alpha = 0.05. Among the SUA group, in 21 neonates (7.1%) the presence of a SUA could not be confirmed by postnatal examination, and 21 (7.1%) had major congenital anomalies, leaving 255 for final analysis. In the control group, 8 of the 297 (2.7%) had major congenital anomalies, leaving 289 for final analysis. The incidence of SGA neonates was 35 of 255 (13.7%) in the isolated SUA group compared with 38 of 289 (13.1%) in the control group ( P = 0.93). The composite perinatal outcomes (fetal death and/or SGA) were also similar between the groups (16.1% versus 14.5%; P = 0.72). We concluded that pregnancies with isolated SUA have a similar rate of SGA to those with 3VC. When a SUA is identified antenatally, a targeted ultrasound is warranted to rule out associated anomalies. Serial antepartum ultrasound for fetal growth is not necessary in managing pregnancies complicated by isolated SUA.
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Affiliation(s)
- Annette E Bombrys
- Department of Obstetrics and Gynecology, University of Cincinnati, Cincinnati, Ohio 45267-0526, USA
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Bombrys A, Barton JR, Habli M, Nowacki E, How H, Sibai B. 467: Expectant management of severe preeclampsia at 27 weeks gestation: Maternal and perinatal outcomes according to gestational age at onset. Am J Obstet Gynecol 2007. [DOI: 10.1016/j.ajog.2007.10.486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Habli M, Bombrys A, Barton JR, How H, Sibai B. 385: Etiology and management of acute pulmonary edema in pregnancy-postpartum: Role of echocardiography. Am J Obstet Gynecol 2007. [DOI: 10.1016/j.ajog.2007.10.403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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O’Brien J, Defranco E, Adair D, Lewis DF, Hall D, Bsharat M, How H, Creasy G. 15: Progesterone reduces the rate of cervical shortening in women at risk for preterm birth: Secondary analysis from a randomized, double-blind, placebo-controlled trial. Am J Obstet Gynecol 2007. [DOI: 10.1016/j.ajog.2007.10.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Habli M, Radomile T, Bombrys A, Barton JR, How H, Sibai B. 386: Maternal outcomes of 126 pregnancies with acute pulmonary edema. Am J Obstet Gynecol 2007. [DOI: 10.1016/j.ajog.2007.10.404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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O'Brien JM, Adair CD, Lewis DF, Hall DR, Defranco EA, Fusey S, Soma-Pillay P, Porter K, How H, Schackis R, Eller D, Trivedi Y, Vanburen G, Khandelwal M, Trofatter K, Vidyadhari D, Vijayaraghavan J, Weeks J, Dattel B, Newton E, Chazotte C, Valenzuela G, Calda P, Bsharat M, Creasy GW. Progesterone vaginal gel for the reduction of recurrent preterm birth: primary results from a randomized, double-blind, placebo-controlled trial. Ultrasound Obstet Gynecol 2007; 30:687-96. [PMID: 17899572 DOI: 10.1002/uog.5158] [Citation(s) in RCA: 165] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
OBJECTIVE Preterm birth is the leading cause of perinatal morbidity and mortality worldwide. Treatment of preterm labor with tocolysis has not been successful in improving infant outcome. The administration of progesterone and related compounds has been proposed as a strategy to prevent preterm birth. The objective of this trial was to determine whether prophylactic administration of vaginal progesterone reduces the risk of preterm birth in women with a history of spontaneous preterm birth. METHODS This randomized, double-blind, placebo- controlled, multinational trial enrolled and randomized 659 pregnant women with a history of spontaneous preterm birth. Between 18 + 0 and 22 + 6 weeks of gestation, patients were assigned randomly to once-daily treatment with either progesterone vaginal gel or placebo until either delivery, 37 weeks' gestation or development of preterm rupture of membranes. The primary outcome was preterm birth at </= 32 weeks of gestation. The trial was analyzed using an intent-to-treat strategy. RESULTS Baseline characteristics were similar in the two treatment groups. Progesterone did not decrease the frequency of preterm birth at </= 32 weeks. There was no difference between the groups with respect to the mean gestational age at delivery, infant morbidity or mortality or other maternal or neonatal outcome measures. Adverse events during the course of treatment were similar for the two groups. CONCLUSION Prophylactic treatment with vaginal progesterone did not reduce the frequency of recurrent preterm birth (</= 32 weeks) in women with a history of spontaneous preterm birth. The effect of progesterone administration in patients at high risk for preterm delivery as determined by methods other than history alone (e.g. sonographic cervical length) requires further investigation.
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Affiliation(s)
- J M O'Brien
- Perinatal Diagnostic Center, Central Baptist Hospital, Lexington, Kentucky, USA.
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DeFranco EA, O'Brien JM, Adair CD, Lewis DF, Hall DR, Fusey S, Soma-Pillay P, Porter K, How H, Schakis R, Eller D, Trivedi Y, Vanburen G, Khandelwal M, Trofatter K, Vidyadhari D, Vijayaraghavan J, Weeks J, Dattel B, Newton E, Chazotte C, Valenzuela G, Calda P, Bsharat M, Creasy GW. Vaginal progesterone is associated with a decrease in risk for early preterm birth and improved neonatal outcome in women with a short cervix: a secondary analysis from a randomized, double-blind, placebo-controlled trial. Ultrasound Obstet Gynecol 2007; 30:697-705. [PMID: 17899571 DOI: 10.1002/uog.5159] [Citation(s) in RCA: 164] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
OBJECTIVE To investigate the efficacy of vaginal progesterone to prevent early preterm birth in women with sonographic evidence of a short cervical length in the midtrimester. METHODS This was a planned, but modified, secondary analysis of our multinational, multicenter, randomized, placebo-controlled trial, in which women were randomized between 18 + 0 and 22 + 6 weeks of gestation to receive daily treatment with 90 mg of vaginal progesterone gel or placebo. Cervical length was measured with transvaginal ultrasound at enrollment and at 28 weeks of gestation. Treatment continued until either delivery, 37 weeks of gestation or development of preterm rupture of membranes. Maternal and neonatal outcomes were evaluated for the subset of all randomized women with cervical length < 28 mm at enrollment. The primary outcome was preterm birth at </= 32 weeks. RESULTS A cervical length < 28 mm was identified in 46 randomized women: 19 of 313 who received progesterone and 27 of 307 who received the placebo. Baseline characteristics of the two groups were similar. In women with a cervical length < 28 mm, the rate of preterm birth at </= 32 weeks was significantly lower for those receiving progesterone than it was for those receiving the placebo (0% vs. 29.6%, P = 0.014). With progesterone, there were fewer admissions into the neonatal intensive care unit (NICU; 15.8% vs. 51.9%, P = 0.016) and shorter NICU stays (1.1 vs. 16.5 days, P = 0.013). There was also a trend toward a decreased rate of neonatal respiratory distress syndrome (5.3% vs. 29.6%, P = 0.060). CONCLUSION Vaginal progesterone may reduce the rate of early preterm birth and improve neonatal outcome in women with a short sonographic cervical length.
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Affiliation(s)
- E A DeFranco
- Department of Obstetrics and Gynecology and Center for Preterm Birth Research, Washington University School of Medicine, St. Louis, Missouri, USA.
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Stella C, How H, Webster R, Brockman D, Myatt L, Cui X. The role of Nox1 and Nox5 in the initiation of labor. Am J Obstet Gynecol 2006. [DOI: 10.1016/j.ajog.2006.10.574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bombrys A, Neiger R, Hawkins S, Sonek JD, Croom C, Mckenna D, Ventolini G, Habli M, How H, Maxwell R, Sibai B. Perinatal outcome associated with isolated single umbilical artery: A case control study. Am J Obstet Gynecol 2006. [DOI: 10.1016/j.ajog.2006.10.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Costantine M, How H, Coppage K, Maxwell R, Sibai B. Does peripartum infection increase the incidence of cerebral palsy in extremely low birth weight infants? Am J Obstet Gynecol 2006. [DOI: 10.1016/j.ajog.2006.10.677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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How H, Owens D, Utz G, Khoury J, Recht K. The reliability of lamellar body count in predicting absence of respiratory distress syndrome from transvaginal and transabdominal amniotic fluid samples. Am J Obstet Gynecol 2003. [DOI: 10.1016/j.ajog.2003.10.606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Corwin MJ, Mou SM, Sunderji SG, Gall S, How H, Patel V, Gray M. Multicenter randomized clinical trial of home uterine activity monitoring: pregnancy outcomes for all women randomized. Am J Obstet Gynecol 1996; 175:1281-5. [PMID: 8942501 DOI: 10.1016/s0002-9378(96)70041-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Our purpose was to evaluate the impact of home uterine activity monitoring on pregnancy outcomes among women at high risk for preterm labor and delivery. STUDY DESIGN Women at high risk for preterm labor at three centers were randomly assigned to receive high-risk prenatal care alone (not monitored) or to receive the same care with twice-daily home uterine activity monitoring without increased nursing support (monitored). There were 339 women with singleton gestations randomized with caregivers blinded to group assignment. The two groups were medically and demographically similar at entry into the study. RESULTS Women in the monitored group had prolonged pregnancy survival (p = 0.02) and were less likely to experience a preterm delivery (relative risk 0.59; p = 0.04). Infants born to monitored women with singleton gestations were less likely to be of low birth weight (< 2500 gm; relative risk 0.47, p = 0.003), and were less likely to be admitted to a neonatal intensive care unit (relative risk 0.5, p = 0.01). CONCLUSION These data show, among women with singleton gestations at high risk for preterm delivery, that the use of home uterine activity monitoring alone, without additional intensive nursing care, results in improved pregnancy outcomes, including prolonged gestation, decreased risk for preterm delivery, larger-birth-weight infants, and a decreased need for neonatal intensive care.
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Affiliation(s)
- M J Corwin
- Department of Obsterics and Gynecology, Truman Medical Center, University of Missouri-Kansas City, USA
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Abstract
OBJECTIVE To determine if labor is associated with changes in myometrial estradiol (E2) and progesterone receptors. METHODS Lower myometrial segments were obtained from women undergoing cesarean deliveries at term in labor (n = 10), term not in labor (n = 10), preterm in labor (n = 9), and preterm not in labor (n = 11). Western immunoblotting was used to determine the presence and molecular size of E2 and progesterone receptor proteins. Immunocytochemistry was used to determine E2 and progesterone receptor changes in preterm and term pregnancies. RESULTS Myometrium from pregnant women contained 74-kilodalton (kDa) E2 receptor and 94- and 110-kDa progesterone receptor proteins. These receptors are present in both myometrial smooth muscle and myometrial blood vessels. The nuclei of myometrial smooth muscle cells primarily contain both receptors. The immunostaining for progesterone receptors was less in patients in labor compared with those not in labor in preterm and term pregnancies. In comparing patients not in labor, the immunostaining for progesterone receptors was less at term compared with preterm pregnancy. Unlike the differences in progesterone receptors, there are no obvious differences in E2 receptor immunostaining in myometrial samples from all four groups of women. CONCLUSION A myometrial decrease in progesterone receptors, rather than an increase in E2 receptors, may play a role in the onset of labor in women with term or preterm pregnancies.
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Affiliation(s)
- H How
- Department of Obstetrics and Gynecology, University of Louisville School of Medicine, Kentucky, USA
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Jiang H, Yuan T, How H, Widom A, Vittoria C, Chrisey D, Horwitz J, Drehman A. Measurements of surface impedance, London penetration depth, and coherence length in Y-Ba-Cu-O films at microwave frequencies. Phys Rev B Condens Matter 1994; 49:9924-9932. [PMID: 10009794 DOI: 10.1103/physrevb.49.9924] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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How H, Jiang H, Widom A, Vittoria C. Quantum circuit theory and measurements on Y-Ba-Cu-O grain-boundary weak-link bridges. Phys Rev B Condens Matter 1994; 49:1403-1406. [PMID: 10010452 DOI: 10.1103/physrevb.49.1403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Widom A, Srivastava YN, Vittoria C, How H, Karim R, Jiang H. Quantum-electrodynamic theory of vortex oscillations in type-II superconductors. Phys Rev B Condens Matter 1992; 46:1102-1106. [PMID: 10003297 DOI: 10.1103/physrevb.46.1102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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How H, Vittoria C. Permeability tensor of spherical magnetic particles dispersed symmetrically: An exact solution in multipole expansion. Phys Rev B Condens Matter 1991; 44:9362-9367. [PMID: 9998917 DOI: 10.1103/physrevb.44.9362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bergmann F, Rotmensch S, Rosenzweig B, How H, Chediak J. The role of von Willebrand factor in pre-eclampsia. Thromb Haemost 1991; 66:525-8. [PMID: 1803615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The von Willebrand factor (vWF) has gained considerable interest in recent years as a marker of endothelial cell activation or insult and by virtue of its interactions with platelets and vessel walls. Altered patterns of vWF multimers were found to occur frequently in patients with thrombotic thrombocytopenic purpura in the acute and chronic stages. This disorder shares some clinical and laboratory findings with pre-eclampsia, including thrombocytopenia. Recent studies have also suggested that abnormalities of endothelial cell metabolism play a central role in the pathophysiology of pre-eclampsia. In order to determine if vWF could be instrumental in the disease process and the thrombocytopenia of pre-eclampsia we analyzed the ante- and postpartum structural and functional distribution of vWF. This data was correlated with hematological parameters such as platelet counts and the clinical severity of the disease. We found no consistent changes of vWF in association with thrombocytopenia or clinical severity. However, functional vWF was lower in postpartum samples of severely affected pre-eclamptics as compared to normal controls. This finding may reflect endothelial cell exhaustion after stimulation or cellular injury. Elevated titers of fibrin split products and thrombocytopenia were evident in severe pre-eclampsia, as seen in DIC, despite factor VIII coagulant levels within the normal range. Our data is consistent with the hypothesis of endothelial cell dysfunction in pre-eclampsia. However, the mechanism of thrombocytopenia in this disorder does not appear to be related to alterations in the structure or biological function of vWF.
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Affiliation(s)
- F Bergmann
- Department of Obstetrics and Gynecology, Michael Reese Hospital, Chicago, Illinois
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Mou SM, Sunderji SG, Gall S, How H, Patel V, Gray M, Kayne HL, Corwin M. Multicenter randomized clinical trial of home uterine activity monitoring for detection of preterm labor. Am J Obstet Gynecol 1991; 165:858-66. [PMID: 1951544 DOI: 10.1016/0002-9378(91)90429-u] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Home uterine activity monitoring has been described as an effective means of detecting uterine contractions, but controversy exists whether it is home uterine activity monitoring or increased nursing support in conjunction with it that contributes to earlier detection of preterm labor. In this study 377 women at risk for preterm labor from three centers were prospectively, randomly assigned to high-risk prenatal care alone (not monitored) or to the same care with twice-daily home uterine activity monitoring without increased nursing support (monitored). The two groups were medically and demographically similar at entry into the study. Routine visits, nonroutine visits, and gestational age at diagnosis of preterm labor were similar in both groups. Preterm labor occurred in 41 of 198 monitored and 39 of 179 not monitored patients. Mean cervical dilatation was 1.4 cm in 41 monitored compared with 2.5 cm for 37 not monitored (p = 0.0006); 73.1% of monitored and 27.5% of not monitored had preterm labor detected before 2 cm dilatation (p = 0.00009). Neonatal outcome of singleton pregnancies showed greater birth weight, fewer days in the neonatal intensive care unit, and fewer babies requiring oxygen therapy and mechanical ventilation in the monitored group. The better outcomes are probably due to the increased likelihood of diagnosis of preterm labor before advanced cervical dilatation with home uterine activity monitoring, thus providing the clinician with a better chance to initiate tocolytic therapy directed at improving pregnancy outcome.
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Affiliation(s)
- S M Mou
- Department of Obstetrics and Gynecology, Truman Medical Center, University of Missouri-Kansas City 64108
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How H, Vittoria C. Demagnetization energy and magnetic permeability tensor of spheroidal magnetic particles dispersed in cubic lattices. Phys Rev B Condens Matter 1991; 43:8094-8104. [PMID: 9996434 DOI: 10.1103/physrevb.43.8094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Jiang H, Huang Y, How H, Zhang S, Vittoria C, Widom A, Chrisey DB, Horwitz JS, Lee R. Observation of ultrahigh critical current densities in high-Tc superconducting bridge constrictions. Phys Rev Lett 1991; 66:1785-1788. [PMID: 10043306 DOI: 10.1103/physrevlett.66.1785] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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How H, Vittoria C. Theory of amplified ferrimagnetic echoes. Phys Rev Lett 1991; 66:1626-1629. [PMID: 10043258 DOI: 10.1103/physrevlett.66.1626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Abstract
There has been significant decrease in maternal morbidity and mortality of sickle cell disease patients during pregnancy due to better understanding of the pathophysiology of the disease and physiologic changes during pregnancy. Prophylactic blood transfusion does not appear to reduce complications in patients with sickle cell anemia. Patients with sickle hemoglobin C disease and with S beta thalassemia+ have fewer complications but still need close monitoring. Blood transfusion therapy should be made available for medical and obstetrical complications to include increasing hypoxemia, progressive anemia, acute chest syndrome, twin pregnancy, splenic sequestration syndrome, preeclampsia, septicemia, or prior to general anesthesia and surgery. Blood transfusion therapy is associated with hepatitis, allergic reaction, alloimmunization, AIDS, and iron overload states. These aspects should be considered prior to using blood transfusion therapy. Excellent prenatal monitoring and aggressive intervention should be instituted when problems arise for the successful management of the pregnant patient with sickle cell disease. Prenatal diagnosis and cord blood screening should be made available for the infant. Appropriate pediatric referral and prophylactic penicillin is recommended for the infant with sickle cell disease.
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Affiliation(s)
- M Koshy
- Department of Medicine, University of Illinois, Chicago 60612
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How H, O'Handley RC, Morgenthaler FR. Soliton theory for realistic magnetic domain-wall dynamics. Phys Rev B Condens Matter 1989; 40:4808-4817. [PMID: 9992476 DOI: 10.1103/physrevb.40.4808] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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How H, Vittoria C. Bulk and surface retarded modes in multilayered structures: Antiparallel magnetization. Phys Rev B Condens Matter 1989; 39:6831-6839. [PMID: 9947330 DOI: 10.1103/physrevb.39.6831] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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How H, Vittoria C. Surface retarded modes in multilayered structures: Parallel magnetization. Phys Rev B Condens Matter 1989; 39:6823-6830. [PMID: 9947329 DOI: 10.1103/physrevb.39.6823] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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